Starling-machine



(No Model.) 2 Sheets-Sheet 1.

W. J. BROWN. STAPLING' MAGHINE.

No'. 532,136. Patented Jan. 8, 1 95.

Inventor.

Attorney.

To all whom it may concern:

maintained in position, suspended crown upward, upon amandrel or bar, contained no], removed; Fig. 4 is a vertical sectional NITED STAT-Es PATENT OFFICE.

WILLIAM J. BROWN, OF PHILADELPHIA, PENNSYLVANIA.

STAPLING- MACHINE.

SPECIFICATION forming part of Letters Patent No. 532,136, dated January 8, 1895. Application filed January 25, 1894. Serial No. 497198 (No model.)

Be it known that I, WILLIAM J. BROWN, a citizen of the United States, and a resident of the city of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Machines for Inserting and Olinching Metallic Staples, of which the following is a full, clear, and exact description, reference being had} to the accompanying drawings, forming a part of this specification.

My invention relates to that class of machines for inserting and clinching metallic staples, sometimes called self -feeding machines, in which a series of such staples are within the hollow interior of the machine which is providedwith suitable devices to cause them to be automatically fed forward upon such staple bar to the delivery and driving mechanism when and as required. My present improvements in such machines are adapted equally as well for use in small desk tools, in which the driver is actuated by a hand impact knob, as for larger machines operated by power or by a hand lever.

My invention consists primarily in the combination with the essential elements for the purpose, of such aself-feeding staple-driving tool, viz one in which thestaples are delivered to the throat or delivery channel of the, machine from a fixed mandrel or bar upon which they are supported, crown upward, and so guidedof a staple magazine having interior walls so shaped'and arranged relatively to the mandrel inclosed therein that the staples shall be guided on said mandrel and between said walls, solely-by their two crown-corners, t. a, the two points of junction between the crown and the dependent legs.

My invention also consists in minor details of construction of the machine as will be hereinafter specifically mentioned.

In the accompanying drawings illustrating my invention, Figure l is a side elevation of the completed toolprovided with a hand impact knob actuating the driver blade. Fig. 2 is a vertical section thereof taken longitudinally through the machine on the line 34. of Fig. 3. Fig. 3 is a front end view, with the lower plate inclosing the staple chanview through the line 1--2 of Fig. 1. Fig. 5 is an enlarged view of the central portion of Fig. 4. Fig. 6 is an elevation of the staple bar or mandrel. Fig. 7 is an elevation of the staple holder, with astring of staples thereon, and adapted to be used to deliver staples to the staple'bar or mandrel of the machine. Fig. 8 is a side elevation of the machine of Fig.1, with a pivoted lever arm actuating the staple driver, in lieu of the impact knob for that purpose, and operating also to lift and depress the staple driving member of the device. Fig. 9 is a like view intended in connection with Fig. 8 to illustrate the movements of the lever arm.

In all such self feeding staple driving Inachines, a mandrel or staple bar, whether stationary or removable, must necessarily be employed, as upon this bar the staples are placed or arranged in train crown upward ready to be pushed or fed forward thereon and therefrom singly and in succession to the throat or staple channel of the machine by means of a pusher rod or follower actuated by a spring or'other appropriate means; and

it is equally essential to the successful oper ation of such a machine that the staples on the bar or mandrel should be guided while being so fed or pushed forward thereon, as otherwise the pressure at the rear of the train of staples causes them to crowd both laterally and vertically on and over each other,

the resultbeing either to clog the delivery on the bar or to crowd two staples at the same time across the mouth or entrance of the throat or channel and so stop the operation of the machine. Various expedients have been attempted to obviate this almost universal defeet in such machines, some of which operate to guide the staples by the crown alone, (to prevent vertical movement which causes the crowns to overlap,) others by the legs alone, (to prevent lateral movementwhich causes the legs of contiguous staples to overlap,)'

l others by the crown and one of the legs, (which 1 prevents lateral movement in one direction only) and still others by all three sides of the to be remedied. My present invention obviates these defects in that resp.ect,isexceedingly simple, and very effective, and. consists in constructing or providing the magazine which contains the staple mandrel or bar and which also connects at its forward end with the delivery throat or staple. channel of the. machine with such form of interior walls so arranged relatively to the contained mandrel that the channel or passage way: of the stats ple will present only two points of possible contact with the staple, viz., by the two crown corners of the latter formed by the junction of the crown with the two dependent legs. Hence there is no side pressure on the staple legs nor any top pressure on the crown, and the staple is fully maintained in. positionon; the bar on its forward passageitothethroat. at. the minimum of possible frictional con tact. machine is separately shownl in. Fig; 5;, in, which a, a, arethe; Walls of the. magazine, which presents first ahollow interior col?! any suitableshape, to allow of. the passage; of the; pusher rod or follower R (seeFig. 2) and hav in g a topslot 1), if desired, to enabletheoperais tor to see when the mandrel. is. full or'em'p-ty of staples. Lower vertical walls. at (i each terminate at the top in. an inwardly inclined,

face or wall m, m. The stationary mandrelw. 3

(see Figs. 2 and 6) is arranged within this. magazine in such relative position totheiwalls thereof, that there will beafulland freepass s sage way between each of its vertical sides; and the vertical wallscl cl of the. magazine, for the passage of'the legs of thezstaple and .the top rectangular corners. of the, mandrel,

Will maintain the crown cornersofithesfapless immediately opposite to, andv facingthe; in.

' wardly inclined walls m mof the. magazine;

and in such close proximity thereto. that a. sufficient space only will be; formed for the; passage of the staple I but. without contact. therewith except byalateralQr-verticalmoue ment of the staple, eitherof whichispossible only to an exceedingly limited extent, (and. that without possible con-tact, except bythetwo points of the crowncorners which is not sufficient to cause interruption of, forward; movement by f-riction)-because the ouerh-ang ing inclined faces 1% mot the magazine wallsi lying opposite to the: corners of the mandrel and placed as nearly as possible-at rightan,- gles toa diagonalline drawn fromthc top-and. bottom opposite, corners respectively of; themandrel or bar, will presentpossible contact; surfaces for the crown corners only of the; staples if the latter manifest anytendency-to move out of placeonthe mandrel, and thus; prevent, by this relative position of the parts, an-yundue lateral movement, of the) staples; (and hence. will not permit the legs of the;

contiguousfstapl'csto overlap each: other); or.

any undue vertical movement ofthe: staples (and hence will not permittghecrowding and overlapping of the crownsof contiguous staa plots); and in consequencemo matter whatjis the strength or force of the rear pressureexi This primary feature of my present;

otherwise shaped, as well as fiat or plane,

, their functions being thesame,.provided they are so arranged relatively to the staple bar as to presentpossible contact surfaces for'the crown corners only of the staples mounted or 1 suspended intrai-na crown, upward thereon. It is-ohviousthatthisfeature of my-invention is; applicable; to all selfrfeeding. stapledriving is employed. to." hold. a row-of staples in train. i I have; sho wn itembodied in asmall tool, one 5 format which (seeEigs; 1 and 2) isadapted j: to desk; use and f n-which: the driver is. actuated-.byaihan-diimpact, knob; and-in theother form of; machine. (see Figs; 8 and. 9) in which itho. pivoted feeding and: driving member of the: device, with. the contained, driver, is actnailed. av leverarms.

The. machine shown, in, the. drawin gs, conita-insa base; or supporting stand. Av with a trunnion. A to which the; staple feeding and f i-ving; member. of the-deviceis pivoted at ifAj, andat its; forward end, is: ablocl: A the iface. of which is dish shapedt as at. A, or given any other known: form usual for theipu-rposeof bending-up by'contactand clinchgingthe-.- legs; of. staples, or may be suppliedgwith; any appropriate form of mechanical l-i-nchers... 'lhemagazinemay be madeinteig ral with; the throat or staple.- channel and f'with theistaple. driver guide. of the machine. iIt is-vsoishown,i-nthedrawings, in which the gcasting ofv the? magazine a. terminates at its iforward end in'a vertical projection D"(see iEig.. 2) 'whic h is recessed of the shape and ;size of tiled-river shank D3 towhich, is fitted gthe; driver blade D.- which, is adapted in size f-.to,, and; reciprocates vertically in,.the throat i or staple. channel E; which isformed by chanineling; theface of the magazize armha, (or. of i a separate.pieceisec-ured tothe magazine arm @aifi not. made integral therewith,) and this lst-aple channel communicates directly with ithe; passage; way: formed. between the inteirior vertical walls of the magazine and its icontained mandr lior staplebar. In thedesk .ithroat or-staple channel is closed or covered ibyaplate-D fastened by" a set screw D to the, magazine frame, and can thusbe readily removedif repairs are, needed to the interior of the-machine;

Staples for such self-feeding machines are machines, in. which a mandrel or feeding bar usually provided commercially and put up on sticks, some of which are made according to a form patented to me and shown in Fig. 7, 2'. e., with a longitudinal slot on the under face of the stick. The machine is fed or charged by inserting the stick of staples (Fig. 7) in the open end of the magazine, against the rear face a: of the mandrel, and pushing v the staples off the former on to the latter, by

the pusher R or by other appropriate means.

The staple bar or mandrel Iprefer to provide with a rib as, so that if the operator uses the form of stick shownin Fig. 7 the rib m of the mandrel will pass into the slot at of the stick and hold the latter steady while charging the machine and thus prevent any staples being spilled in the magazine. The bar or mandrel being charged, the staples are automatically fed forward one by one as the driver D in its reciprocation opens and closes the throat or channel E, by means of pressure caused by a follower or pusher R fitting on and embrac-' ing the mandrel, and which follower is actuated by a rod R mounted on a hollow screw nut R screwed into the end of the magazine frame, terminating in an exterior knob R the rod being embraced by a spiral spring R to supply the force. I

In the form of larger machine, shown in Figs. 8 and 9, there is provided a double jointed lever, consisting of the arm H pivoted to the trunnion A at A and at h to the other arm K of the lever, which is pivoted at k to the shank D of the driver and is provided with a hand piece L. This double lever performs two distinct functions in its reciprocation in both directions. Its normal position is shown in Fig. 9. Its first completed movement as shown by the dotted lines in Fig. 9, has for its sole object to lift the staple feeding and driving member of the machine from contact with the anvil or clinching block and 'the underlying papers.

thus allow the papers to be placed thereon. The second movement of the lever, as shown in Fig. 8, operates only to raise the driver blade, which thus uncovers the staple channel, allowing a staple to be shot forward into the same ready to be driven on the return and downward movement of the driver. The return movement of the lever is continuous in action but double in effect, and exactly the reverse of the upward movement, that is, it first returns the lower face of the staple channel in the staple driving member to its normal position and brings it into contactual relation with the clinching anvil or the papers laid thereon; and not until that is fully accomplished, is the continued movement of the lever arm effectual to act on the driver blade to bring it down on thecrown of the staple in the throat or channel and drive it through The limit of upward movement of the staple feeding and driving member may be controlled by the post or projection A or by any analogous means.

Having thus described my invention, what I claimas new, and desire to secure by Letters Patent, is

1. In a self-feeding staple-driving machine, the combination with a feeding bar or mandrel upon which staples in train, are mounted or suspended, crown upward, and with mechan ism to propel the same forward thereon, of guiding devices therefor, presenting possible contact surfaces for each of the crown corners only of the staples arranged in train upon the contained feeding bar; substantially as described.

2. In a self-feeding machine for driving metallic staples, the combination with a feeding bar upon which staples in train are mounted or supended, crown upward, and with mechanism to propel the same forward thereon under pressure, and mechanism to deliver the same singly and in succession to the driving and clinching devices, of guiding devices presenting substantially flat contact surfaces contiguous to each of the crown-corners of the staples and arranged at an angle to both the top and vertical sides of the feeding bar; substantially as and for the purpose set forth.

3. The combination, in a self feeding stapledriving machine, of a frame constructed with avertical recess forming a driver guide, a second recess below but in the same plane therewith forming a staple channel or throat, a staple magazine communicating directly with said throat orchannel and provided with a longitudinal recess to admit the passage of staple propelling mechanism, a follower adapted thereto, a staple supporting and feeding bar mounted within the magazine, and staple guiding devices formed by interior walls of 111191311). ter, consisting of two vertical and parallel walls terminating at top in two inwardly inclined walls; the whole forming a feeding, guiding and driving member, and a supporting base or stand upon which the same is mounted; substantially as described.

4. The combination with the supporting stand or base provided at its forward end with clinching mechanism, and a staple feeding and driving member pivotally mounted on said supporting stand at its rear end, and consisting essentially of automatic staple feeding devices and a channel into which the staples are ejected, controlled by a driver blade reciprocating therein, of the double jointed lever arm actuating said member and its contained driver blade consisting of the connecting anm H pivotally mounted at one end to the supporting base, the straight lever K provided with actuating handle L, said lever K being pivotally secured at one end to the driver blade and at the other end pivotally mounted on the opposite free end of the lever connecting arm H, the same being constructed and operating substantially as and for the purpose described.

5. In a self-feeding staple drivingmachine, provided with a staple feeding magazine, a mandrel or staple bar contained threrein, provided at its rear end with a. rib, in combinafixed my signature this 24th day of January, tion with a. removable stick adapted tohold a I A. D. 1894.

row of staples and having a lon itudinal slot 7 I V on its under face into which sz z id rib of the WILLIAM BROWN 5 stationary mandrel is adapted to enter; subj Witnesses:

stantialiy as and for the purposedescribed. H. T. FEN'I'ON,

In testimony whereof I havehereunto af- W. S. ASHBEY. 

